Sunday June 17th, 2012

Posted at 4:15pm

Environment Canada says a very warm air mass is projected to arrive on Monday over southwestern Ontario and make its way across the rest of Southern Ontario through the week.

The heat is expected to intensify and spread over much of Southern Ontario on Tuesday building into a three-day heat episode. Monday’s high temperatures are expected to reach the 30°C or 86°F mark in Windsor. The mercury is anticipated to soar past 35°C or 95°F Tuesday and likely persist through Thursday, affecting Windsor, Essex County and much of Southwestern Ontario to the greater Toronto area.

Elevated humidity levels will combine with the high temperatures to give humidex values of 40°C or 104°F and higher. Night-time temperatures will also remain very warm and are not expected to drop below 22°C or 72°F.

This is expected to make for very uncomfortable conditions and moderate to high readings in the air quality health index.